<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>


    <style>

        * {
            margin: 0;
            padding: 0;
        }

        body {
            background-color: #000;
        }

        div {
            position: absolute;
            width: 300px;
            height: 300px;
            left: calc(50% - 150px);
            top: calc(50% - 150px);
            /* border: 1px solid #fff; */
            border-radius: 50%;
            /* background-color: red; */


            box-shadow: inset 0px 0px 50px #fff,
                        inset 10px 0px 80px #f0f,
                        inset -10px 0px 80px #0ff,
                        inset 10px 0px 300px #f0f,
                        inset -10px 0px 300px #0ff,
                        0px 0px 50px #fff,
                        -10px 0px 80px #f0f,
                        10px 0px 80px #0ff;
        }

    </style>


</head>
<body>
    <div></div>
</body>
</html>